C#线程的实现

原创：
private void button1_Click(object sender, System.EventArgs e)
        {
            button1.Enabled=false;
            ThreadStart threadDelegate = new ThreadStart(execute);
            Thread thread = new Thread(threadDelegate);
            thread.Start();
        }
private void execute()
        {
            Bitmap newbmp=new Bitmap(textBox1.Text);
            pictureBox1.Image=newbmp;
            Bitmap bmp=(Bitmap)pictureBox1.Image;
            string tmp="";
            string tmp2="";
            int a=0;
            int b=0;
            try 
            {
                for(int j=0;j<pictureBox1.Image.Height;j=j+8)
                {
                    tmp2="";
                    for(int i=0;i<pictureBox1.Image.Width;i=i+8)
                    {
                    
                        Color pixelColor=bmp.GetPixel(i,j);
                        tmp="("+pixelColor.R.ToString()+","+pixelColor.G.ToString()+","+pixelColor.B.ToString()+")";
                        if(tmp=="(255,255,255)")
                            tmp2=tmp2+"0,";                    
                        else
                            tmp2=tmp2+"1,";    
                        a=a+1;
                    }
                    tmp2=tmp2.Substring(0,tmp2.Length-1);
                    WriteFile("test.txt","MapArr["+ b +"] = new Array("+tmp2+");");
                    this.Text="第"+b.ToString()+"行写入成功";
                    b=b+1;
                }
                this.Text="生成成功！";
                button1.Enabled = true;
            }
            catch 
            {
                this.Text="图片格式不支持或写入文件发生异常！";
            }
        }